Air-cooled internal-combustion engine.



M. H. mx. AIR COOLED INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY 31. I916.

Patented May 7,1918

j INVENTOR.

Ail/fan HR/x. BY 6 a M 6 ATTORNEYS.

L N n I i UNITED STATES PATENT OFFICE.

MILTON H. 81x, OF THREE RIVERS, MICHIGAN, ASSIGNOR TO SHEFFIELD CAR COM-rm, OF THREE RIVERS, MICHIGAN.

' AIBPCOOLED INTEBNAL-CQMBUSTIGN ENGINE.

Specification of Letters Patent.

Application filed July 31, 1916. Serial No. 112,308.

719 all whom it ma concern:

Be it known t at I, MILTON H. Rix, a

-. nal-Combustion Engines, of which the folutilized for producing acurrent of air lowing is a specification.

This invention relates to improvements in air cooled internal combustionengines.

The main objects of this invention are:

First, to provide an improved air cooled internal combustion engine.

Second, to provide an air-cooled internal combustion engine in which theexhaustdis 1- rected against the cylinder.

Further objects, and objects relating to structural details, willdefinitel appear from the detailed description to ollow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification. The invention is clearlydefined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawin forming a part of thisspecification, in w ich:

Figure I is an elevation of an internal combustion engine embodying thefeatures of my invention, the structure shown being of the two cycletype.

Fig. II is an enlarged detail section through the ejector device.

In the drawing similar reference characters refer to similar parts inboth views.

Referring to the drawing, the cylinder 1 is provided with longitudinalheat radiating fins 2, the fins being extended onto the head of thecylinder. The engine illustrated is a two cycle engine and is shownmainly in conventional form. A pipe 3 is connected to the exhaust of thecylinder and delivers to an ejector, designated generally by the numeral4, which is disposed in a spaced relation to the head of the cylinderand in alinement therewith so as to deliver a current of air against thehead of the than that of the outer end. The body mem ejector means forcreating her has internal threads at 6 and 7 and is also provided withan internally threaded nipple at 8 at one side to which the exhaust pipe3 is connected by means of the elbow 9 and the coupling 10 so that theexhaust is delivered into the body member.

A tubular air passage member 11 is disposed within the member 5 and hasexternal threads coacting with the threads 6 thereof. This forms anannular exhaust discharge chamber within the body member 5.

A nozzle member 12 is externally threaded to coact with the threads 7 ofthe bodymember and has an inwardly projecting lipv 13 at its inner endcoacting with the passage member 11 to form an annular discharge orificesurrounding the air passage 11, so that when the engine is running theexhaust being discharged through this orifice creates a current of airthrough the ejector, and also draws it from around the ejector,

Patented May 7, 1918.

and discharges or delivers it against the I c linder so that the engineis very efiectively cooled. While I prefer to use an the current of air,othermeans for creating a current of air by discharging the exhausttoward the cylinder and in a spaced relation thereto are found to bequite effective.

My improved cooling means is simple and economical in its parts whichare very readily and easily assembled and, as stated, the

structure is effective for the purpose.

I have not illustrated or described various modifications in structuraldetails or adapunder certain conditions, as I believe the disclosuremade will enable those skilled in the art to which my invention relatesto embody or adapt it as conditions may require.

Having thus described my invention, what I claim as new and desire tosecure by Letters'Pat ent, is:

1. The combination with an internal combustion engine comprising acylinder provided with longitudinally disposed heat radiating finsextending onto the head thereof, an exhaust pipe, and an ejectorcomprising a body member internally threaded at its ends, its inner endbeing of larger bore than its outer end, said member having a nipple atone side to which said exhaust said ejector being disposed in alinement.

with and in spaced relation to the head of the cylinder so that air isdelivered against the head of the cylinder and longitudinally of itssaid radiating fins.

2. The combination with an internal combustion engine comprising acylinder, an exhaust pipe, and an ejector comprising a body memberinternally threaded at its ends, its inner'end being of larger bore thanits outer end, said member having a nipple at one side to which saidexhaust pipe is connected, a tubular air passage member of uniformdiameter disposed in said body member and threaded into the outer endthereof, there being an annular exhaust delivery chamber around said airpassage member, and a nozzle member threaded into the inner end of saidbody member to embrace'said air passage member and spaced from said airpassage member to provide an annular delivery orifice at the endthereof, said ejector being disposed in a spaced relation to thecylinder so that air is delivered against it.

3. The combination with an internal combustion engine comprising acylinder provided with longitudinally disposed heat radiating finsextending onto the head thereof, an exhaust pipe, and an ejectorcomprising a body member to which said exhaust pipe delivers, an airpassage member disposed in said body member and forming a passagetherethrough, there being an annular exhaust delivery chamber aroundsaid air passage member, and an annular delivery orifice at the innerend thereof, said ejector being disposed in a spaced relation to thehead of the cylinder so that air is delivered against the head of thecylinder and longitudinally of its said radiating fins.

4. The combination with an internal combustion engine comprising acylinder, an exhaust pipe, and an ejector comprising a body member towhich said exhaust pipe delivers,

an air passage member disposed in said body member and forming a passagetherethrough, there being an annular exhaust delivery chamber aroundsaid air passagemember, and an annular delivery orifice at the inner endthereof, said ejector being disposedin a spaced relation to the cylinderso that air is delivered against it.

5. The combination with an internal com- I of air is delivered againstthe head of the cylinder and longitudinally of its said radiating fins.

6. The combination With an internal conibustion engine, comprising acylinder, and an ejector to which the exhaust of said cylinder isconnected to discharge comprising an annular nozzle and an air passagecentrally thereof, said ejector being disposed so that there is, a freecirculation of air about the same and through said central air passage,and in a spaced relation to the cylinder so that a current of air isdelivered against it.

Inwitness whereof, I have hereunto set my hand and seal in the presenceof two witnesses.

MILTON H. RIX. [n s] Witnesses:

FRED E. BUERGIN, ERNEST J. DUNN.

